BRX Power Injector Installation Guide
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5.2 Calix E3-48-r2
The Calix E3-48 DSLAM family uses a pair of Amphenol connectors to connect to the telephone
switch located at the CO that provides the dial tone on each pair along with the -48Vdc sealing
current.
The POTS Splitter integrated in the Calix E3-48 series DSLAM will merge the -48Vdc from the POTS
pairs with the DSL signal from the DSLAM onto the DSL ports.
NOTE
: In order for the -48Vdc current to flow through the DSLAM, it is important to insert a 5-pin Gas
Tube Discharge device (Bourns or similar) in the corresponding socket for each pair requiring BRX
amplification.
Figure 8: Connecting the BRX Power Injector to a Calix E3-48-r2 DSLAM
5.3 Nokia 7330 ISAM
The Nokia 7330 ISAM family uses a dedicated blade to act as the POTS splitter. The CO ports are
used to connect to the telephone switch located at the CO that provides the dial tone on each pair
along with the -48Vdc sealing current.
The POTS Splitter module of the Nokia 7330 ISAM will merge the -48Vdc on the CO pairs with the
DSL signal from the DSLAM onto the DROP Ports.
